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Root portion of a wind turbine blade, wind turbine blade, root assembly and wind turbine

A wind turbine, root technology, applied in the field of wind turbines, can solve problems such as failure and shorten the service life of wind turbine blades, and achieve the effect of increasing service life, increasing design options, and reducing the possibility of failure

Pending Publication Date: 2021-07-16
SIEMENS GAMESA RENEWABLE ENERGY AS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Consequently, this root portion is subjected to high compressive stresses and further to loads that occur during operation of the wind turbine, whereby the design options, for example, for the size and type of wind turbine blades are limited, possibly leading to failure and shortening of the wind turbine blade service life

Method used

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  • Root portion of a wind turbine blade, wind turbine blade, root assembly and wind turbine
  • Root portion of a wind turbine blade, wind turbine blade, root assembly and wind turbine
  • Root portion of a wind turbine blade, wind turbine blade, root assembly and wind turbine

Examples

Experimental program
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Effect test

Embodiment Construction

[0035] figure 1 A wind turbine 1 according to an embodiment of the invention is shown. The wind turbine 1 comprises a rotor 2 with three wind turbine blades 5.1 , 5.2, 5.3 connected to a hub 3 . However, the number of wind turbine blades 5 may be at least one wind turbine blade 5 , two wind turbine blades 5 or more than three wind turbine blades 5 and may be selected according to the needs of a particular setup of the wind turbine 1 .

[0036] The hub 3 is connected to a generator (not shown) arranged inside the nacelle 4 . During operation of the wind turbine 1 , the wind turbine blades 5 are driven in rotation by the wind, and the kinetic energy of the wind is converted into electrical energy by a generator in the nacelle 4 .

[0037]The nacelle 4 is arranged at the upper end of a tower 8 of the wind turbine 1 . The tower 8 is erected on a foundation 9 such as a monopile or triple pile. The foundation 9 is connected to and / or driven into the ground or seabed.

[0038] ...

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PUM

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Abstract

Disclosed are a root portion of a wind turbine blade, the wind turbine blade, a root assembly and a wind turbine. The invention relates to the root portion of the wind turbine blade for the wind turbine, whereby the root portion comprises multiple first bolts arranged within the root portion and extending out of a root attachment face of the root portion for attachment of the root attachment face to a bearing or a hub flange, and whereby the root portion comprises multiple first connection means fixedly arranged within the root portion, wherein the multiple first bolts are connected to the root portion by means of the first connection means for transmission of force from the multiple first bolts to the root portion via the multiple first connection means, whereby the first connection means are arranged in a first row along the root portion and each of a multiple of second connection means is fixedly arranged within the root portion and in a second row along root portion, whereby each of the first connection means is connected to one of the second connection means, wherein the first row is closer to the root attachment face than the second row.

Description

technical field [0001] The present invention relates to a root portion of a wind turbine blade for a wind turbine, a wind turbine blade, a root assembly and a wind turbine. Background technique [0002] The root assembly comprises the root portion of the wind turbine blade connected to the bearing or hub flange of the wind turbine. Connecting means are arranged within the root portion. These connection means are connected to bolts which are fixed against bearings or hub flanges of the wind turbine. When the bolt is fastened, the root portion is loaded, resulting in compression of the root portion and tensile stress in the bolt. Consequently, this root portion is subjected to high compressive stresses and further to loads that occur during operation of the wind turbine, whereby the design options, for example, for the size and type of wind turbine blades are limited, possibly leading to failure and shortening of the wind turbine blade service life. Contents of the invent...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F03D1/06F03D80/00
CPCF03D1/0633F03D1/0675F03D1/0658F03D80/00Y02E10/72F05B2260/301
Inventor V·R·卡瓦拉
Owner SIEMENS GAMESA RENEWABLE ENERGY AS